VoiceGate, from CallsFlow, gives an existing AI agent the ability to talk on the phone. With one API call, the agent chooses the number, a male or female voice, the language and a webhook that points to its own logic.
VoiceGate then places the call, transcribes what the other person says, sends it to your agent and speaks the agent's reply back in real time. Calls are paid from a prepaid balance. It does not supply the agent's thinking, only the voice and phone connection.